Ultralightweight and easily packable, this is the baselayer to grab for warm-weather backpacking when temperatures fluctuate between night and day, sunshine and clouds. These bottoms breathe, wick moisture, stretch and insulate, and provide a cool, drying airflow. Made of our stretchiest Capilene® performance baselayer fabric, they also dry in a flash. The smooth jersey face and brushed elastic waistband feel smooth against skin. With a gusseted crotch for mobility and a fully functional fly. Made of 4.6-oz 94% polyester/6% spandex jersey with 50+ UPF sun protection and Polygiene® permanent odor control. Fabric is bluesign® approved.

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Capilene® Polyester Baselayer

Made from moisture-wicking polyester, Capilene® synthetic baselayers wick moisture away from your skin, breathe efficiently and dry fast to provide the foundation for any layering system for any pursuit. Designed for fast-forward, aerobic activities, they’re quick to wick and quick to dry. Capilene polyester is made from recycled polyester (35% recycled content or more) and is also machine washable.

We make four Capilene fabrics for different levels of exertion and temperatures. All Capilene fabrics have achieved bluesign® approval; have an updated and consistent fit in each fabric weight; and use Polygiene® technology to control odor in the garment. They are the best baselayer option for high-sweat activities and wet conditions.

Sun Protection

Lacking fur, feathers or scales, we humans have to think up clever ways to protect ourselves from the sun. Products with the UPF designation provide built-in sun protection that won’t wear off.

UPF stands for “Ultraviolet Protection Factor.” This value represents the fractional amount of the sun’s harmful UV rays that pass through a fabric. A rating of “25” indicates that only 1/25th , or 4% of the UV rays pass through the garment.

Patagonia products with rated UPF protection are tested independently to meet Australia/New Zealand or AATCC protocols. A rating of 15-24 earns a product a rating of “good”; a rating of 25-39 is "very good"; and a rating of 40-50+ is “excellent.”*

The Footprint Chronicles®

We promote fair labor practices, safe working conditions and environmental responsibility throughout the Patagonia supply chain.Below are the suppliers that impact the Patagonia Men's Capilene® 1 Silkweight BottomsRead more